Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec102a85503d3c3…

MALICIOUS

PDF

13.0 KB
MD5: 398f0312294ae28b24c7f3e2da650a6d SHA-1: e448c324bf95ff298d0545b32e24178b5a50abf1 SHA-256: bec102a85503d3c3664461e80e51bb9a1604bcfedbc8e3f1291c7e3bb601cdaa
114 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1566.002 Spearphishing Attachment T1059.001 PowerShell

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as Pdf.Exploit.Agent-36962. It contains embedded files and an XFA form with an action trigger, indicating an attempt to exploit PDF vulnerabilities. The presence of an embedded URL further supports the delivery of malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-36962 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36962
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.xfa.org/schema/xfa-locale-set/2.1/

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0041.bin
c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb		 pdf-embedded-file PDF EmbeddedFile object 41 at offset 0x26C4 85 bytes
embedded_file_obj0042.bin
dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91		 pdf-embedded-file PDF EmbeddedFile object 42 at offset 0x2776 1029 bytes
embedded_file_obj0043.bin
9c58a0994eee827abd1bc8adae7b02a4c6236f9577fb5360a2838db447a23842		 pdf-embedded-file PDF EmbeddedFile object 43 at offset 0x298F 1789 bytes
embedded_file_obj0044.bin
3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169		 pdf-embedded-file PDF EmbeddedFile object 44 at offset 0x2D9F 144 bytes
embedded_file_obj0045.bin
10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275		 pdf-embedded-file PDF EmbeddedFile object 45 at offset 0x2E4B 77 bytes

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